Meaning and history
Eirwen is a Welsh feminine name combining eira, “snow,” with gwen, the feminine form of gwyn, meaning “white,” “fair,” or “blessed.” It is therefore commonly interpreted as “white as snow” or “blessed snow.” The components belong to established Welsh naming vocabulary, and the name should retain its Welsh pronunciation. A notable bearer was Welsh scientist, educator, and writer Eirwen Gwynn, who wrote both scientific and literary works in Welsh.